Custom Shell and Tube Heat Exchangers
ASME U-Stamp Certified • TEMA Class R, C, & B Compliant • Specialized Alloy Manufacturing for Petrochemical & Marine Industries.
Global Engineering Standards
LMART provides precision-engineered thermal solutions. Our shell and tube heat exchangers are designed to withstand pressures up to 35 MPa and extreme temperature differentials in refinery and LNG services.
ASME BPVC VIII-1 (U Stamp), TEMA, API 660, GB/T 151, and Marine Class approvals (DNV, ABS, LR, BV, NK, CCS).
The LMART Advantage
- High-nickel alloy & Titanium welding expertise.
- HTRI thermal design verification.
- Complete 100% traceable Data Book delivery.
- 600+ PQR welding qualifications.
Mechanical Configurations
Exotic Material Portfolio
We process specialized materials to ensure corrosion resistance in aggressive media:
- Titanium (TA1, TA2)
- Duplex 2205 / 2507
- Hastelloy C276
- CuNi 70/30 & 90/10
- Inconel & Monel
- Stainless 304L/316L
Typical Overall Heat Transfer Coefficients
Global References
PIL (14K TEU LNG): Supplied 8 sets of BOG compressor skids with integrated heat exchange.
the customer: Reliquefaction units for Snow White 91K carriers.
Air Products: High-pressure steam generators (ASME U).
FREQUENTLY ASKED QUESTIONS
Common questions about heat exchanger design, materials, and delivery
What TEMA types do you manufacture?
We manufacture the full range of TEMA shell-and-tube configurations including BEM, AES, AEL, BEU, AKT, and NEN types. The most common for industrial applications are BEM (fixed tubesheet, cost-effective) and AES (floating head, easy maintenance). We recommend the appropriate type based on your process conditions, fouling tendency, and maintenance requirements.
What is your maximum design pressure and temperature?
Standard designs cover up to 35 MPa (5,000 psi) design pressure and 550°C (1,022°F) tube-side temperature. For cryogenic services (LNG, ethylene), we design down to –196°C. All designs comply with ASME BPVC Section VIII Div.1, GB/T 151, or PED 2014/68/EU as required.
What materials can you use for corrosive or special media?
Beyond standard carbon steel (Q345R, SA516-70), we work with 304/304L, 316/316L, duplex 2205, titanium (Gr.1/Gr.2), Hastelloy C-276, Inconel 625, and copper-nickel alloys (C70600, C71500). Material selection depends on the process fluid, temperature, and corrosion allowance — we can provide a corrosion assessment during design.
Do you perform thermal design in-house?
Yes. We use HTRI Xchanger Suite for thermal rating and design, and can optimize for your specific process conditions (flow rates, fouling factors, pressure drop constraints). We provide full thermal data sheets and can interface directly with your process engineers during the design review.
What is the difference between your standard and EPC-ready heat exchangers?
Standard units ship with basic documentation (GA drawing, data sheet, test report). EPC-ready packages include full documentation (P&ID, stress analysis, WPS/PQR, MTC, NDE reports, hydro test certificates), third-party inspection (TPI by Lloyd's, BV, or TÜV), and compliance with project-specific specifications. Lead time is typically 2–4 weeks longer.
How long does a typical heat exchanger take to deliver?
Small to medium units (≤50 m² surface area): 4–6 weeks. Large or special-material units: 8–14 weeks. EPC projects with third-party inspection and extensive documentation: 10–18 weeks. We provide a detailed production schedule at order confirmation.
REQUEST A QUOTATION
Share your process datasheet or specifications — our engineers will provide a technical proposal within 48 hours.